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Note 7 - Line of Credit (Details Textual) - USD ($)
$ in Thousands
Nov. 03, 2023
Sep. 30, 2025
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]  
HSBC Venture Bank USA Inc. [Member] | Revolving Credit Facility [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 30,000  
Line of Credit Facility, Sublimit on Maximum Borrowing Capacity 8,100  
Long-Term Line of Credit   $ 0
HSBC Venture Bank USA Inc. [Member] | Line of Credit, Accordion Feature [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 20,000  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.50%  
HSBC Venture Bank USA Inc. [Member] | Line of Credit, Accordion Feature [Member] | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.00%  
HSBC Venture Bank USA Inc. [Member] | Line of Credit, Accordion Feature [Member] | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.30%